13724909 has 12 divisors (see below), whose sum is σ = 15576960. Its totient is φ = 12071400.

The previous prime is 13724903. The next prime is 13724927. The reversal of 13724909 is 90942731.

It is not a de Polignac number, because 13724909 - 2⁸ = 13724653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13724903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1922 + ... + 5580.

It is an arithmetic number, because the mean of its divisors is an integer number (1298080).

Almost surely, 2^13724909 is an apocalyptic number.

It is an amenable number.

13724909 is a deficient number, since it is larger than the sum of its proper divisors (1852051).

13724909 is a wasteful number, since it uses less digits than its factorization.

13724909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712 (or 3701 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 13724909 is about 3704.7144289405. The cubic root of 13724909 is about 239.4251810754.

The spelling of 13724909 in words is "thirteen million, seven hundred twenty-four thousand, nine hundred nine".